Not sure where you're at but in the US the National Organic Program (NOP) has a website www.ams.usda.gov which covers farmers to processors with the different levels of organic. There are rumors the US may be getting rid of the 100% category to come in line with other countries 'organic' definitions NOP lists what ingredients/items have to be organic as well as which ones are allowed to be non-organic. Basically, if you can find (Google) an organic option then it needs to be organic. In the US you can use any NOP certifier. Some states have cost-sharing plans, etc. As a small company, we've taken our BRC manual and incorporated Organic right into them so as not to have to create everything new, kid of like checking in allergen products- another category. The biggest difference between certifiers in the US is how they charge. QAI (part of NSF or vice-versa), which was an early certifier in the organic world, charges a flat fee for the audit and no additional fees based on volume-so that works great for the big companies. I hope I got that all correct. We started with a certifier that has a state price share program for the audit and then they charge a % for Organic sales greater than a certain amount. This works for us breaking into the organic processing world. This gives you a bit of information about the US system. Good Luck and don't make it harder than it is.